eta-api elektron-sdk elektron rrt refinitiv-realtime elektron-transport-api java c++ rssl reactor trep rcc-api c connection source-directory refinitiv-realtime-sdk batch symbology rrto fields refinitiv-real-time elektron-data-dictionary ssl consumer api log-in rics Service DACS eikon token ADS build linux non-interactive-provider market-by-price rdm multi-threading rcc market-feed encoding callback status exchanges conflation stress-test chain-ric service-dictionary data-model enum open-source disconnection message commodities api-limits fanout service-id trade dispatch contributions documentation failover quote monitoring aws search ema-api load-balancing compile unsubscribe ipa constituents volume snapshot-pricing pricing rdf refinitiv-realtime-optimised tls stream-id tick-history-rest-api rfa error refresh-message service-name events subscription mrn time-stamp locking sink-driven-source sequence stale OMM docker elektron-direct-feed ADH equities performance 64-bit